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Correlation between local oxygen disorder and electronic properties in superconducting RESr2Cu3O6+X (RE = Y, YB)

Abstract:

This work aims at understanding the large reduction of superconducting critical temperature Tc observed in YSr2Cu3O6+χ as compared to its YBa2Cu3O6+χ counterpart (ΔTc=-30 K). We report on a combined study of structural and electronic properties of RESr2Cu3O6+χ (RE=Y, Yb) polycrystalline samples. Neutron diffraction data and Cu NQR spectra show that, contrary to REBa2Cu3O6+χ RESr2Cu3O6+χ is locally tetragonal and no CuO chains are formed. This arises from the random occupancy of oxygen along t...

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Publication status:
Published

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Publisher copy:
10.1142/S0217979203016753

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Volume:
17
Issue:
4-6
Pages:
873-878
Publication date:
2003-03-10
DOI:
EISSN:
1793-6578
ISSN:
0217-9792
URN:
uuid:64fb5265-7e14-49a9-8c7d-644f9a412058
Source identifiers:
66339
Local pid:
pubs:66339

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